Digital differential analyzer



Feb. 9, 1960 D. E. ECKDAHI.v ETAL 2,924,381

` DIGITAL DIFFERENTIAL ANALYZER Filed April 22, 1952 48fsheets-sheet 1 Feb. 9, 1960 D. E. ECKDAHL ETAL 2,924,381

l DIGITAL DIFFERENTIAL ANALYZER l Filed April 22, 1952 4a sheets-sheet 2 Feb. 9, 1960 I Filed April 22, 1952 D. E. ECKDAHL ET AL DIGITAL DIFFERENTIAL ANALYZER 48 Sheets-Sheet 3 Feb. 9, 1960' n. E. EcKDAHL Erm. 2,924,381

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DIGITAL DIFFERENTIAL ANALYZFR Filed April 22', 1952 4s sheets-sheet s vrfA/r #fran/mere Feb. 9, 1960 D. E. ECKDAHL ETAL DIGITAL DIFFERENTIAL ANALYZER Filed April 22,' 1952 48 Sheets-Sheet 7 Feb. 9, 1960 D. E. EcKDAHL ET AL 2,924,381

DIGITAL DIFFERENTIAL ANALYZER Filed April 22, 1952 48 Sheets-Sheet 8 -Feb- 9, 1960 E. EcKDAHL vE'r AL 2,924,381

DIGITAL DIFFERENTIAL ANALYZER 48 Sheets-Sheet 9 Filed April 22, 1952 Feb.9, 1960 Filed April 22, 1952 D. E. ECK'DAHL ETAL DIGITAL DIFFERENTIAL ANALYZER 48 Sheets-Sheet 10 Feb. 9, 1960 D. E. ECKDAHL ET AL 2,924,381

DIGITAL DIFFERENTIAL ANALYZER Filed April 22, 1952 48 Sheets-Sheet 11 Feb. 9, 1960 Filed April 22, 1952 DqE. l-:cKDAHL ET AL 2,924,381

DIGxTAL DIFFERENTIAL ANALYZER 48 Sheets-Sheet 12 l @ya `feb. 9, 1960 Filed April 22, 1952 D. E. EcKDAl-n. ET AL 2,924,381 DIGITAL DIFFERENTIAL ANALYZER 48 Sheets-Sheet 13 v Feb. 9, 1960 D. E. EcKDAHL ETAL 2,924,381

DIGITAL DIFFERENTIAL ANALYZER Filed April 22, 1952 48 Sheets-Sheet 14 sb. m\ Q AI Feb. 9, 1960 v D. E. ECKDAHL ET'AL 2,924,381

DIGITAL DIFFERENTIAL ANALYZER Filed A-pril 22, 1952 48 Sheets-Sheet 15 +265v. o o

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DIGITAL DIFFERENTIAL ANALYZER Filed April 22, 1952 Feb. s, 19Go Filed Aprilv 22 1952 D. E. ECKDAHL ETAL DIGITAL DIFFERENTIAL ANALYZER 48 Sheets-Sheet 18l Feb. 9, 1960 D. E. ECKDAHL Erm. 2,924,381

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